Target pest: Eriococcus coriaceus (Hemiptera: Eriococcidae), gum tree scale
Agent introduced: Pseudoleucopis benefica (Diptera: Chamaemyiidae)
Cameron et al. (1989) - in 1932 a small consignment of P. benefica was imported from Australia. Poor emergence from the imported material resulted in only 11 adults being released.
Cameron et al. (1989) - 11 adults were released at Palmerston North, North Island.
Cameron et al. (1989) - did not establish.
Cameron PJ, Hill RL, Bain J, Thomas WP (1989). A Review of Biological Control of Invertebrate Pests and Weeds in New Zealand 1874-1987. Technical Communication No 10. CAB International Institute of Biological Control. DSIR Entomology Division. 424p.